Oh, thanks so much for your replies.
Maria 2007, I agree that Anna is lovely. It's actually my middle name, also my fab Gran's middle name who just passed away aged 103, so plenty of good reasons to use it. And yes, our reservation about Beth is the one-syllable bit - with the boys' names it does sound like we're overdoing the simple names thing. Darcy is a really good name, it was no.1 the last two times if we'd had a girl, but now we're just thinking maybe we need something a bit more feminine. I liked your suggestions too - we have an Abigail and Olivia in the family both under 2 years, they obviously work with the surname!
Diddl, I really love Felix too, and if this one turns out to have little boy parts, I will be working hard on DH who isn't as keen as I am.
Hassled, Harriet is a nice name. DH loves Harry so must run Harriet by him, it might work. Anna is a good name, isn't it? I worry that it's maybe a bit plain sometimes, can't decide about this one.
Hulababy, Anna is probably top of the tentative list right now. Love Beth too, have an Elizabeth Granny on DH's side and it's a silly thing, but since we gave both our boys middle names from DH's side of the family, am reluctant to seem to call a third child a name from his family and leave my poor Mum and Dad out in the cold again.
Mathanxiety, our reservation about Carrie is is the 'ie' running into our surname. It's actually not too bad, but not totally crisp - otherwise this name would be higher up. Jana is lovely, and I wouldn't like the Yana spelling, so I guess the niggle is whether people could manage 'Jana'. Around here I was amazed to hear what the local accent could do to 'Luke', so anything is possible!
AllieW - we played around with Beth and Anna to try and find a slightly longer name, but didn't come up with anything that felt better than the simple names on their own.
Skegness, a funny thing comes to mind when I see Anna and Nancy in your reply. At the weekend my Dad was showing me some old census records of our family from 100 years ago. I had never known I had a great-grandaunt Anna on my Mum's side - this was because she was known as Nancy all her life
Thanks all, good reassurance and food for thought. Guess I will probably have plenty of time to think about it, but still get to EDD with nothing decided